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Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 6 on 5-1/2 - Load Range D

Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 6 on 5-1/2 - Load Range D

Item # AM32666
Our Price: $205.04
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Trailer Tires and Wheels
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Shipping Weight: 51 lbs
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Trailer Tires and Wheels AM32666 - Steel Wheels - Galvanized,Boat Trailer Wheels - Kenda
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Radial tire has a ply rating of 8 and a 2,540-lb maximum load at 65 psi. The 15" diameter x 6" wide steel trailer wheel features a 6 on 5-1/2 bolt pattern and a corrosion-resistant galvanized finish. Great Prices for the best trailer tires and wheels from Kenda. Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 6 on 5-1/2 - Load Range D part number AM32666 can be ordered online at or call 1-800-940-8924 for expert service.
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Kenda Trailer Tires and Wheels - AM32666

  • Tire with Wheel
  • 15 Inch
  • 6 on 5-1/2 Inch
  • 225/75-15
  • Load Range D
  • Steel Wheels - Galvanized
  • Boat Trailer Wheels
  • Radial Tire
  • M - 81 mph
  • Kenda

Radial tire has a ply rating of 8 and a 2,540-lb maximum load at 65 psi. The 15" diameter x 6" wide steel trailer wheel features a 6 on 5-1/2 bolt pattern and a corrosion-resistant galvanized finish.


  • Kenda Karrier special trailer radial tire
    • Special trailer tire design
      • Couples the strength of a bias tire with the durability and stability of a radial tire
      • Created specifically for trailers and not intended for use on other vehicles
    • Double steel belts and full nylon plies combine for superior function and long life
    • Computer-generated tread design and premium rubber-compound materials
      • Superior traction in wet or dry conditions
  • 8-Spoke steel wheel is galvanized to resist rust
  • Tire-and-wheel assembly meets Department of Transportation specifications


  • Rim dimensions: 15" diameter x 6" wide
  • Bolt pattern: 6 on 5-1/2"
  • Wheel capacity: 2,600 lbs
  • Wheel bolt size: 1/2"-20
  • Offset: 0
  • Pilot diameter: 4.27"
  • Tire size: ST225/75R15
    • Section width: 8.9"
    • Outer diameter (when inflated): 28.4"
  • Tire capacity:
    • Load range: D
    • Ply rating: 8
    • Maximum load: 2,540 lbs at 65 psi
  • Maximum speed: 81 mph (speed rating M)
  • Warranty:
    • 5-Year on tire
    • Limited 2-year on wheel

1-Year Worry-Free Guarantee

This tire has a 1-year worry-free guarantee. If within the first 12 months the tire is damaged in any way, it will be replaced at no charge.

Radial Tires vs. Bias Tires

Radial tire vs bias tire graphic

Radial ply tires are designed for trailers that are towed on the highway. The cords on a radial tire are positioned at a 90-degree angle to the direction of travel so that they lay across the width of the tire from wheel lip to wheel lip. This construction prevents the cords from rubbing against one another when the tire flexes, unlike the cords on a bias ply tire. As a result, radial tires have less rolling resistance and heat buildup, which leads to a longer tread life and improved steering at higher speeds.

Determining the Bolt Pattern

The first number in the bolt pattern is the number of bolt holes. The second number denotes the diameter, in inches, of the circle on which the bolt holes sit.

Bolt Pattern - Odd

To determine the bolt-circle diameter on wheels with an odd number of bolt holes, measure from the center of any bolt hole to the point halfway between the two bolt holes directly across from the first. (Example: "5 on 4-1/2" means 5 bolt holes with 4-1/2" measured to a point halfway between the opposite bolt holes.)

Bolt Pattern - Even

On wheels with an even number of bolt holes, measure from the center of one bolt hole to the center of the hole directly across from it. (Example: "8 on 6-1/2" means 8 bolt holes with 6-1/2" from the center of one hole to the center of another on the opposite side.)

Bolt Pattern - Side

Measuring the distance from the center of one bolt hole on the wheel to the center of a bolt hole right next to it can also help to determine the bolt pattern.

  • If D = 2-5/8", then the bolt pattern is 5 on 4-1/2"
  • If D = 2-3/4", then the bolt pattern is 5 on 4-3/4"
  • If D = 3", then the bolt pattern is 5 on 5"
  • If D = 3-1/4", then the bolt pattern is 5 on 5-1/2"

32666 8-Spoke 15" Galvanized Wheel and Karrier KR03 Radial Tire - LR D

Customer Satisfaction Score:

Customer Reviews

Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 6 on 5-1/2 - Load Range D - AM32666

Average Customer Rating:  4.8 out of 5 stars   (1057 Customer Reviews)

Radial tire has a ply rating of 8 and a 2,540-lb maximum load at 65 psi. The 15" diameter x 6" wide steel trailer wheel features a 6 on 5-1/2 bolt pattern and a corrosion-resistant galvanized finish.


Very pleased with the delivery and the performance of these tires. The rims came with a good galvanize coating which is needed for the salt water environment my boat trailer has to endure.


Great transaction, fast & smooth. The wheels and tires are exactly as described.
I am using them on a small horse trailer that I am in the process of refurbishing.
Here's a "Before and After" view of the trailer, so you can see the difference just adding these wheels and tires have made.
Good quality product, I'm very satisfied.

Robert B.


Purchased a spare tire and mounting bracket for my boat trailer....arrived quickly and all pieces arrived with it.

The tire is used as a spare but the tire and rim seem like quality products...hopefully I'll never need it though!


My local trailer supply store ran out of the tires I needed so I ordered them from Even after the shipping charges to Hawaii I saved money on the tires and they look great!
Thanks etrailer!!
And an extra thank you to James for his excellent customer service!


I’ve always had the best experience with etrailer and will continue to purchase from them.


Fast shipping. Wheel and tire as descri bed.


Mary B from etrailer was very friendly and helpful .
I ordered a spare tire w/Galvan Wheel .
I ordered it one day and I had it four days later.
If you want to get the best , order from etrailer ( )


Delivery was very fast and on time. Excellent job!


Amazing service. Ordered on a Sunday at noon and less than 4 hours later it shipped. Great updates as well.


As described.


Very easy to order. Customer service was excellent.


Tires were delivered on time and in excellent condition. Have not installed them on the boat trailer, will very soon. Tires & rims in excellent condition.


Fast shipping. Exactly what I was hoping for. Everything arrived very well packaged. On point. Will definitely do business again.


Just right and right on time. Thanks


Parts always in stock. I can get my projects done fast.


Great quality easy installation!I will continue to purchase in future from etrailer!!!


Perfect transaction. Very quick fulfillment and delivery during this time of shortages and everything taking forever.
Great customer care and interest from ordering to delivery. And the price was more than competitive with local dealers (that couldn't even supply the tires and rims).
Kudos again to etrailer and the personnel.


The tire and wheel arrived in great shape and quick shipping for our upgraded suspension setup for Surveyor travel trailer. This will be the new spare to replace the 5 on 4.5 bolt 14" wheel/tire currently.


I pull up etrailer as my "go to" source of trailer parts. My order of 3 wheels/tires was shipped quickly, delayed by the shipper a bit, but delivered in a reasonable time, and the quality of the wheels and tires was definitely worth waiting for. I'll be ordering more parts and pieces later this week.

I bought the wheels and tires to replace aging ones on a boat trailerboat that I had sold. I drove them 800 miles without incident and the new owner says that they have been used as expected. Good tires, great price. Ill be ordering another 8 soon, for two more boats.
Larry H - 09/08/2019


The tires/wheels appear to be of very good quality and arrived on time. The only reason I am not giving 5 stars is that I checked the air pressure on all 4 tires and 3 where exactly the same, BUT, the 4th was at 76 pounds rather than 54. So, not a problem with the product, but quality control.


I bought this tire and wheel combo as a spare for my boat trailer. For any of you that purchase one of these, beware. The "triangles" in the wheel are full of large, sharp metal burrs so DO NOT handle the wheel using these openings or you will tear your fingers open like I did. Extremely poor quality workmanship.

According to the manufacturer, the burrs you speak of are residue of the dipping process from when the wheels are galvanized.
-- Etrailer Expert Mike L - 07/03/2018


as pictured, fast service


Product was as described and delivered quickly, thank you!


I have a 10 year old dump trailer and the original equipment wheels were rusting and the tires would not hold pressure anymore. I reached out to my local tire shop and they suggested using galvanized wheels (I live in Maine with lots of road salt in winter). I said great order them up. He was not able to get them from his supplier and suggested I by they online. I found etrailer and thought the wheels looked like what I needed. Then I realized I could purchase the tires at the same time. The ordering process was clear and easy, the shipping was prompt and they wheels and tires are exactly what I needed.


I tried three major brand local tire stores looking for galvanized wheels and new tires for my boat trailer. All of them said they would have to special order what I wanted. When I showed them the price and free shipping from, all of then said they could not beat, or meet, the price.

I received my order in only four days from the date I placed the order. Super fast shipping and delivery! Great looking galvanized rims for my boat trailer should last a long time, and the already mounted tires made replacing the old tires and rims a breeze. Up and running in less than an hour from the time UPS delivered them.

I will most definitely shop here again and recommend to my friends.

Show More Reviews

See what our Experts say about this Kenda Trailer Tires and Wheels

  • Are The Trailer Tire And Wheel Combination Balanced
    The trailer tire and wheel combination is received from the supplier already with the tire mounted on the wheel. The supplier does not balance the combination, but when the tire is installed to the wheel they will line the high (heavy) spot on the tire with the low (light) spot on the wheel. This does not completely balance the tire and wheel combination but it does eliminate any excessive out of balance condition. I would recommend to balance the tire and wheel combination at a local...
    view full answer...
  • What Is The Backspacing of the Kenda Karrier ST225/75R15 Tire with Galvanized Wheel?
    The Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 6 on 5-1/2 - Load Range D # AM32666 you asked about has a zero offset so the backspacing will be 1/2 the width of the tire. The tire is 8.9 inches wide so the backspacing is 4.45 inches from the hub face where the wheel meets the hub.
    view full answer...
  • What is the Maximum PSI of the Karrier ST225/75r15 Radial Tire with 15" Galvanized Wheel
    The Karrier ST225/75r15 Radial Tire # AM32666 has a maximum psi of 65 when at the maximum load rating of 2540-lbs.
    view full answer...
  • Replacement Wheels and Tires for Pop-Up Camper with 3770 GVWR
    The Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 6 on 5-1/2 - Load Range D # AM32666 are an 8-ply tire with a maximum load of 2540-lbs per tire, so using these on your pop-up camper with a 3770-lbs GVWR are going to be a good solution and will provide more than enough capacity. In order to carry the maximum capacity and ensure that your tires stay in good working order, you'll want to make sure that you always have them inflated to 65psi when cold. This will make...
    view full answer...
  • Recommended Tire For EzLoader Triple Axle Boat Trailer
    The Karrier ST225/75R15 Radial Trailer Tire # AM32666 will make an awesome spare tire. It meets all of the qualifications that your are looking for. It features a special boat trailer tire design, so it's going to couple the strength of a bias tire with the durability and stability of a radial tire. This is created specifically for trailers so it's not intended for use on other types of vehicles. It's going to feature double steel belts and full nylon plies that are going to combine for...
    view full answer...
  • Replacing 8.75R16.5 Tires on Dual Axle Trailer
    There is a solution for you, though we only have light truck tires that will fit a 16.5 inch diameter wheel. Instead, you would need to replace your wheels with something that supports a more common tire size. I recommend the Kenda # AM32666, which has a galvanized steel wheel that fits on a 6 on 5-1/2 inch bolt pattern and uses ST225/75R15 tires that have a D load range.
    view full answer...
  • Speed Rating of Kenda Karrier 225/75R-15 Tire Used on AM32666 Wheel/Tire Combo
    The Kenda Karrier 225/75-15 Load Range D tire used on the # AM32666 wheel/tire combo carries an M rating, which is good for up to 81 mph. As long as the TPMS sensors you used are compatible with rubber valve stems, they'll work just fine with this wheel/tire. I've linked to a product description video, where my buddy Cole will run you through the features of the wheel/tire.
    view full answer...
  • Recommended 225/75-15 Tire & Wheel w/ 6 Lugs For Spare Tire on Boat Trailer
    If you're just looking for a spare mounted to a wheel with no real need for the best of the best, then go with a a good value, which is a tire from Kenda mounted on a galvanized wheel: - Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel - 6 on 5-1/2 # AM32666 The # AM32666 has the 6 on 5-1/2" bolt pattern you need and is easily the best value for a boat trailer to just have a solid spare on hand if needed. It'll serve you perfectly for that exact need.
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  • Replacement Tire And Rim For A 2008 Statcraft Aruba TT
    When it comes to replacing tires on your 2008 Starcraft Centennial Camper you need to figure out what tire size you have, and what the bolt pattern is on your rim. I will attach a link below that shows you have to measure your bolt pattern so you can find the correct part below. The Karrier Tire # AM32666 is a 225/75R15 and has a bolt pattern of 6 on 5-1/2. This tire has a speed rating of 81 MPH. I attached a review video link below.
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  • Smallest Wheel and Tire Combination Available with a 6 On 5-1/2" Lug/Bolt Pattern
    The Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel # AM32666 is the smallest wheel and tire size we carry with a 6 on 5-1/2" bolt pattern. Our 14" wheels will only have a 5 on 4-1/2" bolt pattern.
    view full answer...
  • Availability of 15 Inch Trailer Wheel with 6 Lugs
    We offer a number of wheel and tire and wheel options for 15 inch wheels with 6 on 5-1/2 inch wheel bolt patterns, but we do not offer a wheel exactly like the one in the photo you sent. The closest match I was able to find for the wheel in your photo is the Americana Steel Spoke Trailer Wheel, Glavanized Finish, 15 Inch x 6 Inch Rim, 6 on 5-1/2 Inch Wheel Bolt Pattern # AM20534. I have attached a review video of this wheel for you. This wheel is also available in the tire and wheel...
    view full answer...
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  • E Rated Trailer Tire Recommendation for Tire Size ST225/75R15
    The rim itself would have no problem handling 80 psi as most trailer wheels easily handle quite a bit more. The valve stems might need to be upgraded to a higher capacity but normally that's replaced at the time of a tire replacement anyway. For a Load Range E tire in the size ST225/75R15 we have the Karrier part # AM10303 which has a capacity of 2,830 lbs at 80 psi and a speed rating of 81 mph.
    view full answer...
  • Galvanized Wheel and Tire With 6 on 5-1/2 Inch Bolt Pattern
    You can go to a smaller wheel and tire, and the smallest option we have for a galvanized wheel with a 6 on 5-1/2 inch bolt pattern and trailer tire is the Karrier ST225/75R15 Radial Trailer Tire with 15" Galvanized Wheel # AM32666. So you will want to take a quick measurement just to verify but this should be perfect for the space you have. This wheel and tire combo has an 8.9" width and 28.4" total diameter and is a very high quality wheel that is galvanized like you were looking for...
    view full answer...
  • Which Tires Are The Right Size For 1970 Single Axle Airstream Trailer
    You will want to check your Airstream axle out and make sure it has the weight capacity of 4,000 lbs as you mentioned. The capacity should be on a plate or sticker on the axle, or you could use the VIN and call the manufacturer for that information. If you find that the axle has a higher weight capacity than the 3640 lbs your tires provide, you may wish to replace the tires with a load range D tire like the Karrier ST205/75R15 Radial Trailer Tire, part # AM10245. This tire has a maximum...
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  • Replacement H78-15 Tires and Wheels for Trailer
    The modern equivalent to the H78-15 size tires you have on the trailer is a 225/75-15 tire. Changing the tires and wheels so that they are all the same size is definitely a good idea. For this tire size, I recommend the Kenda Karrier ST225/75R15 Radial Trailer Tire # AM10256. This is an excellent radial ply tire that features a maximum load of 2,540 pounds at 65 psi. It will fit 15 inch wheels with a 6 inch, 6-1/2 inch, or 7 inch width. For a tire and wheel combo to fill in the rest...
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  • Recommended Spare Tire for a Venture VATB-7225 Boat Trailer
    You will want to get a spare tire that has the same size and weight capacity as your current tires do. If your spare was rated for a lower weight capacity and you had a blowout while under a full load, your spare tire might not be able to handle the weight. I looked up your Venture Boat Trailer model and it looks like your tire size for your VATB-7225 is ST225/75D15 with a Load Range of D. From what I gather it looks like your wheel has a 6 lug pattern. A great spare tire would be the...
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  • Recommended Aluminum Trailer Wheel and ST225/75R15 Tire for Sundowner 3-Horse Trailer
    On the linked page you can view all of our aluminum-wheel-with-tire products that have your required 6-on-5-1/2 wheel bolt pattern with tire size ST225/75-15. We have both bias ply and radial tire types available and several different designs of aluminum wheel. As an example, Westlake part # LH96FR is a Load Range E radial tire on a stylish Liger wheel. The combination handles up to 2,830-lbs at 80-psi and it is rated for highway speeds up to 75-mph, an L speed rating. Even better, this...
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  • Recommended Load Range C Tire And Steel Wheel With 6 On 5-1/2 Bolt Pattern For Spare
    The tire you are asking about is the Taskmaster Radial Tire, part # TTWTRTM2057515C. This tire does not come mounted on a wheel. The wheel you described sounds like the Americana Steel Spoke Trailer Wheel, part # AM20534. This is not offered in a tire/wheel combo. The tire/wheel combos we offer in a 15 inch radial and with a 6 on 5-1/2 bolt pattern have a 225/75-15 tire, and are either a load range D or E. The combo with a galvanized wheel is the Karrier Load Range D, part # AM32666....
    view full answer...
  • Availability of 225/75-15 Load Range D Tire on Silver Rim With 6 on 5-1/2 Inch Bolt Pattern
    I don't offer the Kenda ST225/75-15 Load Range D with an unpainted wheel, about as close as we can come to that is either the # AM32666 which is the same tire on a galvanized rim with a 6 on 5-1/2 inch bolt pattern or the Taskmaster # TA62FR 225/75-15 Load Range D Tire mounted on a silver powder coated mod wheel with a 6 on 5-1/2 inch bolt pattern. If you wanted the wheel to match your existing wheels, you could use the # AM32673 wheel/tire combo you'd looked at and paint the wheel silver. I've...
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  • Spare Tire Recommendations For 2021 Heartland Trail Runner 27RKS
    For your 2021 Heartland 27RKS I recommend the Castle Rock ST225/75R15 Radial Trailer Tire w/ 15" Galvanized Wheel # AM32666 as a spare tire. This tire is of radial construction for great highway manners. It is filled with Nitrogen to help maintain the correct pressure as it will not leak down as easily as basic air. You can add air from a regular compressor if the air pressure does lower. It will not hurt it to not be topped off with nitrogen. For the carrier I recommend the Ultra-Fab...
    view full answer...
  • Recommended Replacement Hub Assembly For Utility Trailer
    With the part numbers you provided for your bearings I recommend the Dexter Trailer Hub Assembly, part # 42655UC1. This idler hub has a 6 on 5-1/2 wheel bolt pattern and is designed for 6,000-lb trailer axles. This hub assembly comes with bearings, races, seal, grease cap, wheel bolts and lug nuts. Since you said you want to change the hub to a non-brake assembly, you will need to either replace the surge coupler or lock it out so it cannot move in or out. Since you are going with...
    view full answer...
  • Options for an ST225/75-15 Load Range D Trailer Tire Mounted on a Wheel with 6 on 5-1/2 Bolt Pattern
    Yes, we do have several options for an ST225/75-15 tire, load range D, on a 15 inch wheel with a 6 on 5-1/2 inch bolt pattern. We have the following options: # AM3S870 with regular steel wheel and bias ply tire # AM32664 with regular steel wheel and radial tire # AM32666 with galvanized wheel and radial tire # AM32673 with modular steel wheel and radial tire # AM3S913 with aluminum wheel and bias ply tire # AM32669 with aluminum wheel and radial tire # AM32575 with black steel wheel and...
    view full answer...
  • Which Trailer Hub Works With the #42 TruRyde Spindle Part # TRU57FR
    I do have an option for you but there is not a trailer hub available that will work with the #42 TruRyde Spindle part # TRU57FR and allow for you to use a wheel with a 5 on 4-1/2" bolt pattern like the Loadstar ST205/75D14 Bias Trailer Tire with 14" Galvanized Wheel part # AM3S450. Therefore, you will need to choose a new wheel/tire to work with the trailer hubs that we do have available for this spindle which use a 6 on 5-1/2" bolt pattern. For a new wheel/tire with a 6 on 5-1/2" bolt...
    view full answer...

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Info for this part was:

Employee Mike L
Expert Research:
Mike L
Employee Jeff D
Expert Research:
Jeff D
Employee Laura H
Updated by:
Laura H
Employee Mary E
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Mary E
Employee Wilson B
Updated by:
Wilson B
Employee Isabelle B
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Employee Cole B
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